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1.The chemical analysis of the sample revealed high levels of toxic metals.
该样本的化学分析显示高浓度的有毒金属。
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2.The study focused on the chemical availability of essential nutrients in soil.
该研究关注土壤中必需营养素的化学可用性。
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3. The new fertilizer has a higher chemical availability than traditional ones.
这种新型肥料的化学可用性比传统肥料更高。